Case Studies

Helping Founders Scale with AI Systems that Drive Growth

Starting your AI journey shouldn't mean endless trial and error with generic tools. I build scalable AI systems that deliver measurable results - fast.

• Strategic AI Implementation: Tailored systems to fit your unique business goals

• Growth-Focused AI: Designed to scale users, traffic, and operational efficiency

• End-to-End AI Solutions: Full development, from concept to deployment

AI Case Studies

Multi-Dimensional Vector Search Engine – Solvearn.net (100K+ Users, €600K Valuation)

• Architected multi-dimensional vector search engine leveraging MongoDB and OpenAI embeddings, delivering sub-200ms response times across 6 profile dimensions while scaling to 100K+ users in under 6 months

• Built agentic AI landing page generation pipeline (React, TypeScript, Firecrawl, OpenAI API) as the company's first revenue-generating feature, managing 35+ dynamic component combinations while maintaining authentic brand voice consistency

Enterprise AI Automation Platform – Ghostteam.ai (Fortune 500 Clients)

• Co-developed productized AI workflow systems serving enterprise clients including Fortune 500 companies and New Zealand's 4th largest marketing agency, enabling scalable automation at enterprise scale

• Engineered end-to-end AI-driven Market Intelligence pipeline using unsupervised ML clustering for automated keyword optimization, transforming multi-day research workflows into minutes and reducing manual effort by 80%

Custom Wake Word AI Avatar System – CTBTO (Comprehensive Nuclear-Test-Ban Treaty Organization) 2025

• Built integrated system combining proprietary wake word detection with AI avatar generation, successfully showcased at United Nations CTBTO Vienna 2025 international conference

• Generated follow-up engagement from UN stakeholders for additional AI applications and continuation projects, demonstrating technical credibility and international validation

Conversational Voice AI Onboarding Agent – Solvearn.net

• Architected conversational voice AI onboarding agent integrating speech recognition, ElevenLabs synthesis, LangChain orchestration, and OpenAI embeddings for seamless user onboarding

• Increased profile completion by 30% and reduced sign-up funnel drop-off by 22% through sophisticated prompt-tuned dialogue flow optimization and contextual response handling

AI-Powered 24/7 Customer Support Automation – Smartpeak.io

• Engineered 24/7 AI-driven support channel with real-time product recommendations powered by FastAPI and OpenAI API for intelligent customer service automation

• Built dynamic product carousel interface with JavaScript delivering personalized product recommendations integrated with Google Sheets for seamless data synchronization

E-Commerce Hyper-Personalization Engine – BigBridge.nl (€500K Seed Stage)

• Invited by founder to join seed-stage e-commerce SaaS startup as founding technical team member (€500K initial investment) to architect and build core ML infrastructure from the ground up

• Led development of production ML-powered recommender and search system implementing K-Means clustering, collaborative filtering, and NLP content filtering, achieving 96% recall and 74% NDCG ranking accuracy through comprehensive ML research pipeline

Thesis Report

E-commerce Image Search Recognition – BigBridge.nl (€500K Seed Stage)

• Developed and optimized end-to-end search-by-image system integrating LangChain and ChromaDB with OpenAI's CLIP embeddings, delivering accurate and scalable e-commerce product search and recommendations

• Architected advanced similarity computation pipelines with efficient ANN search, enabling real-time visual search and recommendation functionalities across web and mobile platforms

Report

Car Counting and Tracking System – Indonesia

• Engineered a real-time car counting system using YOLOv8 for object detection and OpenCV for video processing, exclusively detecting and counting cars while differentiating from vans and trucks

• Optimized processing pipeline for GPU execution with PyTorch, achieving 50% latency reduction and ensuring smooth performance for real-time video analysis

Hand Detection Balloon Pop Game

• Architected a real-time interactive balloon pop game using OpenCV and Pygame with CvZone-powered hand detection for precise gesture-controlled gameplay

• Achieved 90% hand detection accuracy over 500 frames, delivering responsive and smooth interaction between hand gestures and in-game objects

Job Recommendation System – Solvearn Prototype

• Built a content-based job recommendation system leveraging BERT embeddings to match user queries with relevant job postings through semantic similarity analysis

• Optimized end-to-end data processing pipeline using PCA for dimensionality reduction and efficient cosine similarity calculations, delivering scalable architecture for over 100,000 job postings

CNN-Based Tomato Leaf Disease Detection – Indonesia

• Achieved 97.65% training accuracy with 0.0718 loss, consistently delivering high-confidence predictions across multiple disease classes

• Integrated CNN model into React frontend and FastAPI backend web application for real-time disease detection, deployed on GCP for production reliability serving farmers and agricultural professionals

Report

Enhanced Diabetes Classification – Indonesia

• Engineered machine learning model for accurate diabetes classification using Naive Bayes and K-Nearest Neighbors algorithms to process and analyze clinical data

• Achieved 75.5% model accuracy with maximum AUC score of 0.822, demonstrating robust clinical data analysis and prediction capabilities for healthcare AI applications

Report

Autonomous Code Agent

• Built an autonomous GPT agent in Rust for automated code writing, testing, and rewriting, leveraging OpenAI API and Actix Web framework

• Designed specialized AI functions for extracting structured responses from large language models, enabling precise code generation and validation workflows

Web Development Case Studies

RuangBerubah Consulting Website – RuangBerubah NGO

• Developed comprehensive website for NGO “Ruang Berubah” connecting small and medium enterprises with buyers through digital platform

• Delivered production-ready marketplace solution resembling a detailed and secure Facebook Marketplace tailored for small businesses and entrepreneurs

Edufort Educational Privacy Portal – Edufort

• Architected dynamic, responsive dashboard with real-time data visualization capabilities, automatically updating every three months

• Engineered comprehensive front and backend of data-leak register featuring detailed forms and dynamic tables for efficient data processing entry management

Personal Blog and Portfolio Website – Daniel Matias Portfolio

• Designed and developed comprehensive online presence showcasing professional accomplishments and personal journey since relocating abroad

• Built production-ready portfolio website with integrated blog functionality, representing latest iteration of web development expertise

Old Website

Desktop Delivery Platform Interface

• Engineered desktop application for product distribution platform, designed to enhance company visibility and market reach with efficient operational workflows

• Architected comprehensive backend database infrastructure using SQL to manage user information, order processing, and product catalog with optimized data organization